ld: grow dwarf includestack on demand.

Fixes #2241
while not breaking issue 1878 again.

R=rsc
CC=golang-dev
https://golang.org/cl/4988048

22 files changed, 196 insertions, 0 deletions

diff --git a/test/dwarf/linedirectives.go b/test/dwarf/linedirectives.go
new file mode 100755
index 0000000000..68434f0ab5
--- /dev/null
+++ b/test/dwarf/linedirectives.go
@@ -0,0 +1,83 @@
+// $G $D/$F.go && $L $F.$A && ./$A.out
+
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//line foo/bar.y:4
+package main
+//line foo/bar.y:60
+func main() { 
+//line foo/bar.y:297
+	f, l := 0, 0
+//line yacctab:1
+	f, l = 1, 1
+//line yaccpar:1
+	f, l = 2, 1
+//line foo/bar.y:82
+	f, l = 3, 82
+//line foo/bar.y:90
+	f, l = 3, 90
+//line foo/bar.y:92
+	f, l = 3, 92
+//line foo/bar.y:100
+	f, l = 3, 100
+//line foo/bar.y:104
+	l = 104
+//line foo/bar.y:112
+	l = 112
+//line foo/bar.y:117
+	l = 117
+//line foo/bar.y:121
+	l = 121
+//line foo/bar.y:125
+	l = 125
+//line foo/bar.y:133
+	l = 133
+//line foo/bar.y:146
+	l = 146
+//line foo/bar.y:148
+//line foo/bar.y:153
+//line foo/bar.y:155
+	l = 155
+//line foo/bar.y:160
+
+//line foo/bar.y:164
+//line foo/bar.y:173
+
+//line foo/bar.y:178
+//line foo/bar.y:180
+//line foo/bar.y:185
+//line foo/bar.y:195
+//line foo/bar.y:197
+//line foo/bar.y:202
+//line foo/bar.y:204
+//line foo/bar.y:208
+//line foo/bar.y:211
+//line foo/bar.y:213
+//line foo/bar.y:215
+//line foo/bar.y:217
+//line foo/bar.y:221
+//line foo/bar.y:229
+//line foo/bar.y:236
+//line foo/bar.y:238
+//line foo/bar.y:240
+//line foo/bar.y:244
+//line foo/bar.y:249
+//line foo/bar.y:253
+//line foo/bar.y:257
+//line foo/bar.y:262
+//line foo/bar.y:267
+//line foo/bar.y:272
+	if l == f {
+//line foo/bar.y:277
+	panic("aie!")
+//line foo/bar.y:281
+	}
+//line foo/bar.y:285
+	return
+//line foo/bar.y:288
+//line foo/bar.y:290
+}
+//line foo/bar.y:293
+//line foo/bar.y:295
diff --git a/test/dwarf/main.go b/test/dwarf/main.go
new file mode 100644
index 0000000000..7f2ec4c00a
--- /dev/null
+++ b/test/dwarf/main.go
@@ -0,0 +1,29 @@
+// $G $D/$F.go $D/z*.go && $L $F.$A && ./$A.out
+
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package main
+func main() {
+F1()
+F2()
+F3()
+F4()
+F5()
+F6()
+F7()
+F8()
+F9()
+F10()
+F11()
+F12()
+F13()
+F14()
+F15()
+F16()
+F17()
+F18()
+F19()
+F20()
+}
diff --git a/test/dwarf/z1.go b/test/dwarf/z1.go
new file mode 100644
index 0000000000..7f163e9a1d
--- /dev/null
+++ b/test/dwarf/z1.go
@@ -0,0 +1,5 @@
+
+
+//line x1.go:4
+package main
+func F1() {}
diff --git a/test/dwarf/z10.go b/test/dwarf/z10.go
new file mode 100644
index 0000000000..19c70020e0
--- /dev/null
+++ b/test/dwarf/z10.go
@@ -0,0 +1,6 @@
+
+
+
+//line x10.go:4
+package main
+func F10() {}
diff --git a/test/dwarf/z11.go b/test/dwarf/z11.go
new file mode 100644
index 0000000000..c1d2f9180f
--- /dev/null
+++ b/test/dwarf/z11.go
@@ -0,0 +1,4 @@
+
+//line x11.go:4
+package main
+func F11() {}
diff --git a/test/dwarf/z12.go b/test/dwarf/z12.go
new file mode 100644
index 0000000000..7455f18946
--- /dev/null
+++ b/test/dwarf/z12.go
@@ -0,0 +1,4 @@
+
+//line x12.go:4
+package main
+func F12() {}
diff --git a/test/dwarf/z13.go b/test/dwarf/z13.go
new file mode 100644
index 0000000000..ecb3c4c8c7
--- /dev/null
+++ b/test/dwarf/z13.go
@@ -0,0 +1,4 @@
+
+//line x13.go:4
+package main
+func F13() {}
diff --git a/test/dwarf/z14.go b/test/dwarf/z14.go
new file mode 100644
index 0000000000..134b39b64e
--- /dev/null
+++ b/test/dwarf/z14.go
@@ -0,0 +1,4 @@
+
+//line x14.go:4
+package main
+func F14() {}
diff --git a/test/dwarf/z15.go b/test/dwarf/z15.go
new file mode 100644
index 0000000000..d73819b443
--- /dev/null
+++ b/test/dwarf/z15.go
@@ -0,0 +1,4 @@
+
+//line x15.go:4
+package main
+func F15() {}
diff --git a/test/dwarf/z16.go b/test/dwarf/z16.go
new file mode 100644
index 0000000000..6c31651baa
--- /dev/null
+++ b/test/dwarf/z16.go
@@ -0,0 +1,4 @@
+
+//line x16.go:4
+package main
+func F16() {}
diff --git a/test/dwarf/z17.go b/test/dwarf/z17.go
new file mode 100644
index 0000000000..b742d16726
--- /dev/null
+++ b/test/dwarf/z17.go
@@ -0,0 +1,4 @@
+
+//line x17.go:4
+package main
+func F17() {}
diff --git a/test/dwarf/z18.go b/test/dwarf/z18.go
new file mode 100644
index 0000000000..84150ff0a3
--- /dev/null
+++ b/test/dwarf/z18.go
@@ -0,0 +1,5 @@
+
+
+//line x18.go:4
+package main
+func F18() {}
diff --git a/test/dwarf/z19.go b/test/dwarf/z19.go
new file mode 100644
index 0000000000..bb2e296841
--- /dev/null
+++ b/test/dwarf/z19.go
@@ -0,0 +1,4 @@
+
+//line x19.go:4
+package main
+func F19() {}
diff --git a/test/dwarf/z2.go b/test/dwarf/z2.go
new file mode 100644
index 0000000000..68bd58257d
--- /dev/null
+++ b/test/dwarf/z2.go
@@ -0,0 +1,4 @@
+
+//line x2.go:4
+package main
+func F2() {}
diff --git a/test/dwarf/z20.go b/test/dwarf/z20.go
new file mode 100644
index 0000000000..03111e1845
--- /dev/null
+++ b/test/dwarf/z20.go
@@ -0,0 +1,4 @@
+
+//line x20.go:4
+package main
+func F20() {}
diff --git a/test/dwarf/z3.go b/test/dwarf/z3.go
new file mode 100644
index 0000000000..5e4ad3ae25
--- /dev/null
+++ b/test/dwarf/z3.go
@@ -0,0 +1,4 @@
+
+//line x3.go:4
+package main
+func F3() {}
diff --git a/test/dwarf/z4.go b/test/dwarf/z4.go
new file mode 100644
index 0000000000..1f28465c57
--- /dev/null
+++ b/test/dwarf/z4.go
@@ -0,0 +1,4 @@
+
+//line x4.go:4
+package main
+func F4() {}
diff --git a/test/dwarf/z5.go b/test/dwarf/z5.go
new file mode 100644
index 0000000000..7f4eeb419a
--- /dev/null
+++ b/test/dwarf/z5.go
@@ -0,0 +1,4 @@
+
+//line x5.go:4
+package main
+func F5() {}
diff --git a/test/dwarf/z6.go b/test/dwarf/z6.go
new file mode 100644
index 0000000000..241791dff2
--- /dev/null
+++ b/test/dwarf/z6.go
@@ -0,0 +1,4 @@
+
+//line x6.go:4
+package main
+func F6() {}
diff --git a/test/dwarf/z7.go b/test/dwarf/z7.go
new file mode 100644
index 0000000000..68c1ad0c24
--- /dev/null
+++ b/test/dwarf/z7.go
@@ -0,0 +1,4 @@
+
+//line x7.go:4
+package main
+func F7() {}
diff --git a/test/dwarf/z8.go b/test/dwarf/z8.go
new file mode 100644
index 0000000000..16eed32a28
--- /dev/null
+++ b/test/dwarf/z8.go
@@ -0,0 +1,4 @@
+
+//line x8.go:4
+package main
+func F8() {}
diff --git a/test/dwarf/z9.go b/test/dwarf/z9.go
new file mode 100644
index 0000000000..cbb94b4d2b
--- /dev/null
+++ b/test/dwarf/z9.go
@@ -0,0 +1,4 @@
+
+//line x9.go:4
+package main
+func F9() {}